ERR_RETURN

Code: 3507 (3507)

As HRESULT:

S: 0 (Success)
C: 0 (Microsoft-defined)
N: 0 (Not an NTSTATUS value)
Facility: 0x000 (FACILITY_NULL: Default)
Code: 0x0db3 (3507)

As NTSTATUS:

Sev: 0 (STATUS_SEVERITY_SUCCESS)
C: 0 (Microsoft-defined)
Facility: 0x000 (Default)
Code: 0x0db3 (3507)

Documented in Win32

HLSL errors and warnings (comperrors.h): 3507

The type can't return a value.